Heat 2 tablespoons of vegetable oil in a wok over high heat. Put the chicken in when the oil is just beginning to smoke. Quickly stir-fry the chicken until it is just cooked, about 3 minutes. Drain the chicken, put it in a bowl and set aside. Leave about 1 tablespoon of oil in the wok. Stir-fry the garlic in the wok for just about 30 seconds, then put the celery in and continue to stir-fry for about 2 minutes. When the celery is just turning bright green put the chicken back in the wok, add 1/4 teaspoon salt, white pepper and cooking wine. Plate and serve.